I need help with the opening time of the valve.
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For ordinary electric valves and pneumatic valves, it takes 10 to 15 seconds to go from closed to fully open. I’d like to ask about those that can be turned on quickly – how fast can they be switched on and off? First, a pulse needs to be controlled using a valve; the switching occurs after 10 seconds
Typical cut-off valves can ensure this within 5 seconds; if you need faster performance, consult the valve manufacturer
Last time, the boss showed me a video where everything turned on in 2 seconds, but it seemed to take a bit longer to turn it off
The valve closing time can be adjusted using air circuit accessories; valves that operate slowly can be controlled with check throttles, while valves that require fast opening and closing can be implemented using pneumatic amplifiers, cylinder dampers, etc
What was said upstairs is correct; it depends on the size of the pipelines and the bore diameter of the solenoid directional valves – these factors determine the flow rate of air. Another factor is the pressure of the air supply. The pipelines don’t need to be overly complex. In my tests, a small pneumatic ball valve opens in one second, larger ones take 1-2 seconds, while even larger ball valves or butterfly valves require 3-5 seconds to open. It also depends on what type of valve is being used.
What is the pressure rating, and how fast do you want it to be?
It is almost impossible for electric versions to achieve rapid movement. For pneumatic systems, depending on the diameter – in the case of butterfly valves and ball valves, if the diameter is not large – it is possible to achieve a response time of less than 0.5 seconds with the right accessories. Slow motion can be controlled for a specific duration by adding dampers or throttle valves.
If you want to turn it on quickly, use a on/off type shut-off valve such as a corner seat valve – it shuts off instantly. For filling machines that need to be turned on and off very frequently, this type of valve is used
First, it’s necessary to determine what type of valve it is, as well as its torque. For valves with lower torque, pneumatic actuators can achieve a response time of around 1 second; those with higher torque may require 3-4 seconds. Electric actuators are not as fast, unless it’s an electro-hydraulic actuator. In our tests, a DN300 high-temperature, high-pressure ball valve equipped with an electro-hydraulic actuator was able to achieve a fast opening and closing time of 0.25 seconds
There is a high-pressure steam valve on site, with an inlet pressure of 125 Bar and an outlet pressure of 36 Bar. Action time is 1 second.
Pulse reverse blowing, with a switching interval of 0.25 seconds possible